UB20.241

UB-Series

24V, 20A, DC-UPS

Output protection

In power supply mode:

The DC-UPS is protected by the current limitation of the supplying power

supply or a circuit protector on the input in case the power supply has an

ampacity greater than 28A.

In battery mode:

The DC-UPS is electronically protected against overload, no-load and

short-circuits

Output over-voltage protection

typ. 32Vdc

max. 35Vdc

In case of an internal DC-UPS defect, a redundant

circuit limits the maximum output voltage in battery

mode. The output shuts down and automatically

attempts to restart.

Degree of protection

IP 20

EN/IEC 60529

For use in a controlled environment according to CSA

22.2 No 107.1-01.

Penetration protection

> 3.5mm

E.g. screws, small parts

Over-temperature protection

included for

battery mode

Output shuts down with automatic restart.

Additional temperature protection for charging of

batteries can be found in chapter 5.

Input over-voltage protection

max. 35Vdc

No harm or defect of the unit

Internal input fuse

no

Reverse input polarity protection

included

Max. -40V

Reverse battery polarity protection

included

Max. -35Vdc

Protection against wrong battery voltage

included

Max. +35Vdc

Battery deep discharge protection

included

Buffering will stop when deep discharge protection is

active. Battery will be disconnected from the DC-UPS.

Input / output separation

not provided

The minus-pole is internally hard-wired with the minus-

pole of the input and battery terminals.

Output voltage

SELV

IEC/EN 60950-1,

The input must be powered from a SELV power source.

PELV

IEC/EN 60204-1, EN 50178, IEC 62103, IEC 60364-4-41,

The input must be powered from a PELV power source.

Class of protection

III

PE (Protective Earth) connection not required

Isolation resistance *)

> 5MOhm

> 5MOhm

> 5MOhm

Power port to signal port

Power port to housing

Signal port to housing

Touch current (leakage current)

The leakage current which is produced by the DC-UPS itself depends on the input

voltage ripple and need to be investigated in the final application. For a smooth DC

input voltage, the produced leakage current is less than 100μA.

*)

Center-tap terminal is categorized in the group of “power port”.

Jan. 2015 / Rev. 2.0 DS-UB20.241-EN

All parameters are specified at 24V, 20A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.

www.pulspower.com Phone +49 89 9278 0

Germany

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